3.3.9.
Skeleton Diagrams
Calenta 25s - 35s
1
Heat exchanger (Central heating)
2
Heating flow
3
Heating return
4
Shunt pump (Central heating)
Calenta 28c - 40c
1
Heat exchanger (Central heating)
2
Hydroblock
3
Plate heat exchanger (DHW)
4
Heating flow
5
Domestic hot water outlet
6
Domestic cold water inlet
7
Heating return
8
3-way valve
9
Shunt pump (Central heating)
3.3.10.
Shunt pump
The boiler is equipped with a circulating pump. This energy-efficient,
modulating circulating pump is controlled by the control unit based on
ΔT. The graph shows the manometric height at various outputs.
Calenta 25s - 28c
H
Manometric height central heating circuit
Q
Water flow
R000124-A
1
4
2
3
T001874-A
1
2
3
9
8
4
5
6
7
T002537-B
0
200
400
600
800
1000
1200
Q (l/h)
10 kW
15 kW
20 kW
25 kW
615
545
435
295
437
623
830
1037
0
100
200
300
400
500
700
H
(
mbar
)
600
3. Technical description
Calenta 25s - 28c - 35s - 40c
16
040412 - 7600585-01
